"I still have a lot of healing that needs to happen ... I know the sun will rise each day offering us new hope," she told the crowd. "None of our journey has ended ... for me I know Neysa would have taken [these challenges] on with strength and confidence... and that’s what I’m choosing to do.”

On the night of Oct. 1, 2017, Stephen Paddock opened fire from the 32nd floor of the Mandalay Bay Resort and Casino, targeting concertgoers below at the Route 91 Harvest Music Festival. Paddock later killed himself in his hotel suite.

John Locher/AP

From left, Linda Hazelwood, Michelle Hamel and Jann Blake, all from California, cry as they attend a prayer service on the anniversary of the Oct. 1, 2017 mass shooting, Oct. 1, 2018, in Las Vegas.

Fifty-eight people were murdered and hundreds of others were injured in what became the deadliest shooting in modern U.S. history.

Smith stressed how those killed were from far beyond just Las Vegas: 33 were from California; seven from Nevada, four from Canada; two from Alaska; two from Utah; one from Arizona; one from Colorado; one from Iowa; one from Massachusetts; one from Minnesota; one from New Mexico; one from Pennsylvania; one from Tennessee; one from Washington; and one from West Virginia.

Ethan Miller/Getty Images

Ashley Schuck of Nevada places a medal she got for running for shooting victim Neysa Tonks in Vegas Strong 5K on a cross set up for Tonks on Oct. 1, 2018 in Las Vegas.

"Our 58 angels are with us, longing for us to smile, to love and for us to heal," Smith said. "We must fight on for them. I know they are with us wanting this for us. Each day wee see our nephews knowing the road that lies ahead for them, knowing they deserve a happy life. This tragedy can't define them. This can't define you. This won't define us."

"Out of the ashes of this tragedy, a beautiful connection happened for all of us," Smith said. "Their legacy will continue to carry on."